diff options
Diffstat (limited to 'Documentation/merge-strategies.txt')
| -rw-r--r-- | Documentation/merge-strategies.txt | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/Documentation/merge-strategies.txt b/Documentation/merge-strategies.txt index 595a3cf1a7..7bbd19b300 100644 --- a/Documentation/merge-strategies.txt +++ b/Documentation/merge-strategies.txt @@ -1,10 +1,10 @@ MERGE STRATEGIES ---------------- -The merge mechanism ('git-merge' and 'git-pull' commands) allows the +The merge mechanism (`git merge` and `git pull` commands) allows the backend 'merge strategies' to be chosen with `-s` option. Some strategies can also take their own options, which can be passed by giving `-X<option>` -arguments to 'git-merge' and/or 'git-pull'. +arguments to `git merge` and/or `git pull`. resolve:: This can only resolve two heads (i.e. the current branch @@ -20,7 +20,7 @@ recursive:: merged tree of the common ancestors and uses that as the reference tree for the 3-way merge. This has been reported to result in fewer merge conflicts without - causing mis-merges by tests done on actual merge commits + causing mismerges by tests done on actual merge commits taken from Linux 2.6 kernel development history. Additionally this can detect and handle merges involving renames. This is the default merge strategy when @@ -32,13 +32,14 @@ ours;; This option forces conflicting hunks to be auto-resolved cleanly by favoring 'our' version. Changes from the other tree that do not conflict with our side are reflected to the merge result. + For a binary file, the entire contents are taken from our side. + This should not be confused with the 'ours' merge strategy, which does not even look at what the other tree contains at all. It discards everything the other tree did, declaring 'our' history contains all that happened in it. theirs;; - This is opposite of 'ours'. + This is the opposite of 'ours'. patience;; With this option, 'merge-recursive' spends a little extra time @@ -47,6 +48,12 @@ patience;; this when the branches to be merged have diverged wildly. See also linkgit:git-diff[1] `--patience`. +diff-algorithm=[patience|minimal|histogram|myers];; + Tells 'merge-recursive' to use a different diff algorithm, which + can help avoid mismerges that occur due to unimportant matching + lines (such as braces from distinct functions). See also + linkgit:git-diff[1] `--diff-algorithm`. + ignore-space-change;; ignore-all-space;; ignore-space-at-eol;; @@ -106,3 +113,11 @@ subtree:: match the tree structure of A, instead of reading the trees at the same level. This adjustment is also done to the common ancestor tree. + +With the strategies that use 3-way merge (including the default, 'recursive'), +if a change is made on both branches, but later reverted on one of the +branches, that change will be present in the merged result; some people find +this behavior confusing. It occurs because only the heads and the merge base +are considered when performing a merge, not the individual commits. The merge +algorithm therefore considers the reverted change as no change at all, and +substitutes the changed version instead. |